Hard starting Yanmar ysm8g - 1980

[FlimFlamII]

Engine is hard to start. Outside temps are in the 60's. It will attempt to fire but will not. When I blow warm air from a hairdryer into the air intake it starts fine. not the most ideal way to get it started. I have read about under sized wire to the start switch so I've hooked up a trigger switch directly to the started until I get around to running new wire to the switch.

 

[SycloneDriver]

Does this engine use a glow plug or some other type of heater?

Several things that cause hard starting.
1. Weak battery.
2. Faulty glow plug circuit.
3. Bad starter.
4. Loose ground.
5. Bad or under sized battery cables.
6. Bad fuel.
7. The viscosity of the engine oil even has an effect on cold starting.
8. Worn engine.
9. Faulty injector.
10. Restricted air flow, in or out.

 

[FlimFlamII]

Does this engine use a glow plug or some other type of heater?

Several things that cause hard starting.
1. Weak battery.
2. Faulty glow plug circuit.
3. Bad starter.
4. Loose ground.
5. Bad or under sized battery cables.
6. Bad fuel.
7. The viscosity of the engine oil even has an effect on cold starting.
8. Worn engine.
9. Faulty injector.
10. Restricted air flow, in or out.

Will check these out.
1. battery is good
2. no glow plugs on this engine
3. new starter a few years ago
4. will check
5. size okay but will check condition
6. plan to change out fuel filters due to another issue
7. this should be okay
8. it is old...
9. injector rebuilt a few years ago
10. no outward restrictions on air flow.

thanks for the check list!